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Diffraction fringes persist under greatly attenuated light

Contribution grade

Optical physics · Source-reported experimental result or reusable measurement method

Reference score100,000Provisional editorial estimate of this exact contribution; its grade is assessed separately.

What changed

G. I. Taylor photographed diffraction around a needle using increasingly attenuated light. He reported no reduction in the sharpness of the pattern, including for a photograph exposed for about 2,000 hours.

Scientific scope

G. I. Taylor photographed diffraction around a needle using increasingly attenuated light. He reported no reduction in the sharpness of the pattern, including for a photograph exposed for about 2,000 hours. The experiment used a gas-flame source, screens and photographic plates. It did not use a heralded single-photon source or record individual photon arrivals. Exposure calibration was checked under brighter conditions, and the plates did not reach exactly the same darkness. J. J. Thomson communicated the paper but was not its printed coauthor.

Evidence

The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. The experiment used a gas-flame source, screens and photographic plates. It did not use a heralded single-photon source or record individual photon arrivals. Exposure calibration was checked under brighter conditions, and the plates did not reach exactly the same darkness. J. J. Thomson communicated the paper but was not its printed coauthor.

Contributors

Provisional WRS assessment, edition 2026-10-28.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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